超临界600MW汽轮机运行方式的优化研究  

Study on Operation Mode Optimization for a 600 MW Supercritical Steam Turbine

作　　者：范鑫[1] 秦建明[2] 李明[1] 付晨鹏 

机构地区：[1]河南电力试验研究院,郑州450052 [2]河南工业大学电气工程学院,郑州450007

出　　处：《动力工程学报》2012年第5期356-361,共6页Journal of Chinese Society of Power Engineering

摘　　要：阐述了汽轮机变负荷运行的优化原理,介绍了某电厂600MW超临界汽轮机组变负荷运行优化试验的情况,并按照机组高调阀的实际流量特性,通过不同典型负荷下(包括540MW、480MW、420MW、360MW、330MW和300MW共6个负荷)的热效率对比试验,得到了机组优化后的变负荷运行方式,考虑了机组排汽压力的修正,给出了相应运行曲线的拟合函数.结果表明:优化后的运行方式在机组低负荷运行时,汽轮机热耗率明显降低,优化后的运行方式有效地提高了机组变负荷运行时的经济性.A description is being made to the optimization principle of varying load operation of steam turbine,together with an introduction to the optimization experiment for a 600 MW supercritical steam turbine under varying load operation conditions.According to actual flow characteristics of the HP control valve,an optimized operation mode is obtained by comparing its thermal efficiencies respectively corresponding to 6 typical loads（540 MW,480 MW,420 MW,360 MW,330 MW and 300 MW）,based on which fitting functions for relevant operation curves are proposed on the basis of corrected exhaust pressure.Results show that the optimized operation mode may help to reduce the heat consumption rate of steam turbine under low load condition and accordingly improve its economy in varying load operation.

关 键 词：超临界 汽轮机组 经济性 优化运行 热效率 

分 类 号：TK267[动力工程及工程热物理—动力机械及工程]